#include "nes_mapper.h"


uint8_t map76_regs[1];

// Mapper 76
void MAP76_Reset()
{
    // set CPU bank pointers
    // set_CPU_banks(0,1,num_8k_ROM_banks-2,num_8k_ROM_banks-1);

    // set PPU bank pointers
    if (num_1k_VROM_banks >= 8)
    {
        set_PPU_banks(0, 1, 2, 3, 4, 5, 6, 7);
    }
}

void MAP76_MemoryWrite(uint16 addr, uint8 data)
{
    if (addr == 0x8000)
    {
        map76_regs[0] = data;
    }
    else if (addr == 0x8001)
    {
        switch (map76_regs[0] & 0x07)
        {
            case 0x02:
            {
                set_PPU_bank0(data * 2 + 0);
                set_PPU_bank1(data * 2 + 1);
            }
            break;

            case 0x03:
            {
                set_PPU_bank2(data * 2 + 0);
                set_PPU_bank3(data * 2 + 1);
            }
            break;

            case 0x04:
            {
                set_PPU_bank4(data * 2 + 0);
                set_PPU_bank5(data * 2 + 1);
            }
            break;

            case 0x05:
            {
                set_PPU_bank6(data * 2 + 0);
                set_PPU_bank7(data * 2 + 1);
            }
            break;

            case 0x06:
            {
                set_CPU_bank4(data);
            }
            break;

            case 0x07:
            {
                set_CPU_bank5(data);
            }
            break;
        }
    }
}
void MAP76_Init()
{
    NES_Mapper->Reset = MAP76_Reset;
    NES_Mapper->Write = MAP76_MemoryWrite;
}













